Foldable book stand



FIG. 1 is a front, left perspective view of a foldable book stand showing my new design;

FIG. 2 is a front, right perspective view in folded position;

FIG. 3 is a front elevational view of FIG. 1;

FIG. 4 is a rear elevational view;

FIG. 5 is a right side elevational view; and,

FIG. 6 is a left side elevational view. 

The ornamental design for a foldable book stand, as shown. 